605
CXUS51 KPHI 011735
CLMABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
135 PM EDT THU MAY 01 2025
...............................
..THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF APRIL 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 93 04/18/1976
LOW 12 04/01/1923
HIGHEST 81 04/19 83 -2 88 04/29
04/24
04/29
LOWEST 27 04/09 26 1 30 04/08
04/22
AVG. MAXIMUM 63.5 63.4 0.1 63.1
AVG. MINIMUM 40.9 40.3 0.6 41.8
MEAN 52.2 51.8 0.4 52.5
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 5 6.1 -1.1 4
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 10.09 1952
MINIMUM 0.61 1985
TOTALS 2.05 3.67 -1.62 5.56
DAILY AVG. 0.07 0.12 -0.05 0.19
DAYS >= .01 9 11.8 -2.8 13
DAYS >= .10 6 6.8 -0.8 8
DAYS >= .50 1 2.3 -1.3 3
DAYS >= 1.00 0 0.9 -0.9 3
GREATEST
24 HR. TOTAL 1.03 04/11 TO 04/12 2.00
SNOWFALL (INCHES)
RECORDS
TOTAL 13.4 1982
SNOW DEPTH 12 04/02/1924
TOTALS 0.0 0.5 -0.5 0.0
SINCE 7/1 17.8 33.1 -15.3 25.2
SNOWDEPTH AVG. 0 0
DAYS >= TRACE 0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL 0.0 0.0
DEGREE DAYS
HEATING TOTAL 378 403 -25 380
SINCE 7/1 5038 5124 -86 4746
COOLING TOTAL 1 8 -7 11
SINCE 1/1 1 8 -7 11
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WIND (MPH)
AVERAGE WIND SPEED 8.7
HIGHEST WIND SPEED/DIRECTION 32/300 DATE 04/15
HIGHEST GUST SPEED/DIRECTION 52/290 DATE 04/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.47
NUMBER OF DAYS FAIR 12
NUMBER OF DAYS PC 10
NUMBER OF DAYS CLOUDY 8
AVERAGE RH (PERCENT) 58
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 1 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 4
LIGHT RAIN 16 FREEZING RAIN 0
LT FREEZING RAIN 0 HEAVY SNOW 0
SNOW 0 LIGHT SNOW 0
SLEET 0 FOG 8
FOG W/VIS <= 1/4 MILE 0 HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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